Abstract
Nanocellulose is widely utilized in various fields due to its high surface area, excellent mechanical strength, and environmental friendliness. However, nanocellulose is an insulating material with typically low electrical conductivity. Metal-organic frameworks (MOFs) are appealing because of their huge specific surface areas, highly flexible pore size and porosity, diverse topological structure, changeable surface chemistry, and good chemical and thermal strength. The high porosity and surface area, good electrical conductivity, excellent mechanical strength, and flexibility of nanocellulose/MOF composites (NC/MOFs) make it a promising material for energy storage. This paper provides a review of the synthesis and application of NC/MOFs for energy storage of electrodes and separators. It presents the physical and chemical properties of nanocellulose and MOF. Particularly, two preparation strategies for NC/MOFs, the in-situ synthesis method and the ex-situ blending method, are introduced. Then the applications of NC/MOFs in energy storage of electrodes and separators are delivered, including supercapacitors, lithium-ion batteries, sodium-ion batteries, and others. Finally, the challenges and prospects of NC/MOFs for energy storage are addressed.
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